Lubricator.



(No Modal.)

WITNESSES.

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ROY E. HARDY, OF DETROIT, MICHIGAN, ASSIGNOR TO DETROIT MOTOR IVORKS, OF SAME PLACE.

LUBRICATOR.

SEEGIFIUATION forming part of Letters .Patent No. 679,560, dated July 30, 1901.

Application iziled March 29,1901. Serial No. 53.443. (No model To all whom, t may concern:

Be it known that I, ROY E. HARDY, a citi- Zen of the United States of America, residing at Detroit, in the county of Vayne and State of Michigan, have invented certain new and useful Improvements in Lubricators, of which the following is a specification, reference being had therein to the accompanying drawings. Y

Myinvention relates to new and useful improvements in lubricators, and refers more particularly to that class wherein the pulsation of pressure is utilized to actuate the lubricator-valve, and has for its object to make a lubricator more especially adapted for use `in connection with gas or gasolene engines;

and to this end the invention consists in so constructing a lubricator that a predetermined quantity ot oil will be fed to the engine-cylinder at each explosion, and consists, further, in the use ot' a tubular plunger-valve within the oil-supply pipe in constant com: munication with the air-space of the cup and the part to be lubricated and in the provision of a diaphragm across said cup to form a closed air-space above the cil-space and at the same time keep the products of combustion from contaminating the oil.

Theinvention consists, further, in the novel construction, arrangement, and combination of parts, all as more fully hereinafter described,and shown in the accompanying drawings, in which- Figure 1 is a vertical central section through Iny improved oil-cup, showing in full and dotted lines the different positions of the parts when in use. Fig. 2 is a modified construction of plunger.

As shown in the drawings, A represents an oil-cup having a screw-threaded stem at its base to screw into the cylinder of an engine, and B is a hollow standard or feed-tube, preferably formed integral with the bottom of the cup and extending to near the top thereof above the oil in the cup, its bore being a pro longation of that of the stem and at or near its junction therewith is provided with a restricted port or feed-opening a, having the taper valve-seats b c formed on the opposite sides thereof, and O is a tubular valve composed of the two sections d e, adjustably united by means of a screw-thread engagement with each other, each section being pro4 vided at their lower ends with a taper valve fg on opposite sides of the port a and adapt ed to seat against the valve-seats b c, respectively. The hollow stem of the section c extends to near the top of the cup and is suit' ably guided within the standard B near its upper end, as shown. I may, however, as shown in Fig. 2, make the plunger oi' one piece and by means of a screw-thread engagement adj ustably hold one of the valves in place to regulate the vertical movement or" the plunger.

D is a filler-plug adapted to close the upper end of the cup by means of a screw-thread engagement, as shown, and is provided with a diaphragm or partition h, preferably formed integral therewith, adapted to tit over the upper end of the feed-tube to form a closed airspace E in constant communication with the part to be lubricated, which aids in lifting the valve from its seat and momentarily delays its closing until the pressure in the airspace is equalized with that in the cylinder, when the action of gravity will return the plunger to its seat. This partition-wall extending across the top of the oil-space at the same time prevents the products of combustion from coming in contact withl the oil in the cup.

F is a horizontal arm terminating in the stufIing-box Gr and is preferably formed ntegral with the hollow standard B and the side of the cup, near the bottom thereof, and is provided with the oil-duct t', communicating with the feed-tube, and one or more ductsj, communicating with the oil-space or reservoir, a suitable needle-valve G being pro vided for controlling the supply of oil to be fed.

Having thus fully described my invention, it is intended to operate as follows: The reservoir being filled with oil and the valve G opened, the oil will rise within the feed-tube to the level of the oil in the reservoir. The

engine now being started, the explosive in1- pulse will force the piston to the lower end of the cylinder, and as a part of this force or IOC products of combustion leaks by the pistonrings and is emitted at the open end of the cylinder, (the oil-cup being preferably placed' so that the piston normally covers it,) and as a portion of this force or escaping products of combustion in passing between the piston-head and cylinder-casing passes the inlet-opening for the oil-cup it immediately rushes up the same, striking the lower end of the plunger-valve G, and passing up through the valve-stem raises the valve g from its seat, as shown in dotted lines, and allows the oil to fill the space beneath the same, the valvefat the same time seating against its seat, thereby preventing the gases from driving the oil away from the passage a, and as the pressure equalizes itself in the air-space above it will react like an elastic cushion and with the aid of the action of gravity cause the valve g to move to its seat, thus pumping in a charge of oil, one of the conical valves fg always being seated except when in the Vact of pumping, thus admitting oil only as required by the engine, the quantity of the oil being regulated by means of the valve G and by adjusting the section d e from or toward each other, thus limiting the amount of vertical movement. The cup may of course be connected to the cylinder at any point, although I prefer to have the piston normally cover the inlet-port.

What I claim as my invention isl. In an oil-cup, the combination of an oilreservoir divided by a partition-wall into an oil-space and an air-space above the oilspace, of a feed-tube communicating with the outlet of the cup, and with the air-space at its upper end, a restricted feed-openingat, or near the bottom of the tube formed with upper and lower valve-seats, and a hollow plunger vertically guided in said feed-tube and provided with two valves adapted to the valve -seats, and a valve controlled inletopening leading from the oilspace of the cup into the feed-tube at a point above the upper valve-seat.

2. The combination with an oil-cup, of a feed-tube communicating with the outlet of the cup, and extending upwardly above the level of the oil, a transverse partition dividing said cup into an oil-space, and an airspace above the oil-space communicating with the upper end of the feed-tube, but separated from the space containing the oil by said partition, a restricted opening at or near the bottom of the tube, formed with upper and lower valve-seats and a hollow plunger vertically guided in said feed-tube, and providedcwith two valves adapted to alternately seatagainst the valve-seats, and an inlet-opening connecting the oil-space with the feed-tube at a point above the upper valve-seat.

3. The combination of a cup, provided with V an outlet at the bottom, and a filler-plug adapted to close the cup, a transverse partition-wall carried by said plug adapted to forman air-space in the plug above the oil in the cup, of a feed-tube communicating at its lower end with the outlet of the cup and at its upper end with said air-space, a restricted feed-opening in the feed-tube at or near the bottom of the tube, and provided with valveseats on opposite sides of said opening,and a' hollow plunger vertically guided in said feedtube, and provided wit-h two valves on opposite sides of said opening adjustable from and toward each other and adapted to alternately close said opening, and an oil-inlet opening in the feed-tube at apoint above the upper valve-seat.

In testimony whereof I affix my signature in presence of two witnesses.-

ROY E. HARDY.

Witnesses:

OTTO F. BARTHEL, JosErH A. NOELKE. 

